noun🔗Share抗ヒスタミン薬A drug or substance that counteracts the effects of a histamine. Commonly used to alleviate the symptoms of hay fever and other allergies."My sister took an antihistamine to relieve her itchy eyes and runny nose from the pollen in the air. "妹は、空気中の花粉による目の痒みと鼻水から解放するために、抗ヒスタミン薬を飲みました。medicinesubstancediseaseChat with AIVocabulary GamePractice Reading